diff --git a/runbot/models/host.py b/runbot/models/host.py
index 4f42e73f6..3535a58f9 100644
--- a/runbot/models/host.py
+++ b/runbot/models/host.py
@@ -126,7 +126,7 @@ def _docker_update_images(self):
         self.ensure_one()
         icp = self.env['ir.config_parameter']
         docker_registry_host = self.browse(int(icp.get_param('runbot.docker_registry_host_id', default=0)))
-        registry_url = self.registry_url.strip('/') if self.registry_url else f'dockerhub.{docker_registry_host.name}'
+        registry_url = self.docker_registry_url.strip('/') if self.docker_registry_url else f'dockerhub.{docker_registry_host.name}'
         # pull all images from the runbot docker registry
         is_registry = docker_registry_host == self
         all_docker_files = self.env['runbot.dockerfile'].search([])